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    • 3. 发明授权
    • Comparator circuit operating on variable current
    • 比较器电路工作在可变电流
    • US5642062A
    • 1997-06-24
    • US521851
    • 1995-08-31
    • Naomi Kawakami
    • Naomi Kawakami
    • H03F3/45H03F1/02H03K5/24
    • H03K5/2418H03F1/0261
    • A comparator circuit includes a differential amplifier circuit (5, 6, and 7) which receives a first input voltage and a second input voltage, and outputs a comparison result signal by comparing the first and second input voltages, a current circuit (8) which supplies a driving current to activate the differential amplifier circuit, and a current control circuit (2) which is connected to the differential amplifier circuit and the current circuit. The current control circuit is deactivated when the first input voltage is lower than the second input voltage, and is activated when the first input voltage is higher than the second input voltage to reduce the driving current supplied.
    • 比较器电路包括接收第一输入电压和第二输入电压的差分放大电路(5,6和7),并通过比较第一和第二输入电压来输出比较结果信号;电流电路(8),其 提供驱动电流以激活差分放大器电路,以及电流控制电路(2),其连接到差分放大器电路和电流电路。 当第一输入电压低于第二输入电压时,电流控制电路被去激活,并且当第一输入电压高于第二输入电压时被激活,以减小提供的驱动电流。